Make it possible to draw multiple paths at once to a draw target

src/gpu/GrInOrderDrawBuffer.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrInOrderDrawBuffer_DEFINED
 #define GrInOrderDrawBuffer_DEFINED
 
@@ skipping 70 matching lines @@
 
 private:
     enum Cmd {
         kDraw_Cmd           = 1,
         kStencilPath_Cmd    = 2,
         kSetState_Cmd       = 3,
         kSetClip_Cmd        = 4,
         kClear_Cmd          = 5,
         kCopySurface_Cmd    = 6,
         kDrawPath_Cmd       = 7,
+        kDrawPaths_Cmd      = 8,
     };
 
     class DrawRecord : public DrawInfo {
     public:
         DrawRecord(const DrawInfo& info) : DrawInfo(info) {}
         const GrVertexBuffer*   fVertexBuffer;
         const GrIndexBuffer*    fIndexBuffer;
     };
 
     struct StencilPath : public ::SkNoncopyable {
         StencilPath();
 
         SkAutoTUnref<const GrPath>  fPath;
         SkPath::FillType            fFill;
     };
 
     struct DrawPath : public ::SkNoncopyable {
         DrawPath();
 
         SkAutoTUnref<const GrPath>  fPath;
         SkPath::FillType            fFill;
         GrDeviceCoordTexture        fDstCopy;
     };
 
+    struct DrawPaths : public ::SkNoncopyable {
+        DrawPaths();
+        ~DrawPaths();
+
+        size_t fPathCount;
+        const GrPath** fPaths;
+        SkMatrix* fTransforms;
+        SkPath::FillType fFill;
+        SkStrokeRec::Style fStroke;
+        GrDeviceCoordTexture fDstCopy;
+    };
+
     struct Clear : public ::SkNoncopyable {
         Clear() : fRenderTarget(NULL) {}
         ~Clear() { SkSafeUnref(fRenderTarget); }
 
         SkIRect         fRect;
         GrColor         fColor;
         bool            fCanIgnoreRect;
         GrRenderTarget* fRenderTarget;
     };
 
     struct CopySurface : public ::SkNoncopyable {
         SkAutoTUnref<GrSurface> fDst;
         SkAutoTUnref<GrSurface> fSrc;
         SkIRect                 fSrcRect;
         SkIPoint                fDstPoint;
     };
 
     // overrides from GrDrawTarget
     virtual void onDraw(const DrawInfo&) SK_OVERRIDE;
     virtual void onDrawRect(const SkRect& rect,
                             const SkMatrix* matrix,
                             const SkRect* localRect,
                             const SkMatrix* localMatrix) SK_OVERRIDE;
 
     virtual void onStencilPath(const GrPath*, SkPath::FillType) SK_OVERRIDE;
     virtual void onDrawPath(const GrPath*, SkPath::FillType,
                             const GrDeviceCoordTexture* dstCopy) SK_OVERRIDE;
+    virtual void onDrawPaths(size_t, const GrPath**, const SkMatrix*,
+                             SkPath::FillType, SkStrokeRec::Style,
+                             const GrDeviceCoordTexture* dstCopy) SK_OVERRIDE;
 
     virtual bool onReserveVertexSpace(size_t vertexSize,
                                       int vertexCount,
                                       void** vertices) SK_OVERRIDE;
     virtual bool onReserveIndexSpace(int indexCount,
                                      void** indices) SK_OVERRIDE;
     virtual void releaseReservedVertexSpace() SK_OVERRIDE;
     virtual void releaseReservedIndexSpace() SK_OVERRIDE;
     virtual void onSetVertexSourceToArray(const void* vertexArray,
                                           int vertexCount) SK_OVERRIDE;
@@ skipping 29 matching lines @@
     // effect.
     bool needsNewState() const;
     bool needsNewClip() const;
 
     // these functions record a command
     void            recordState();
     void            recordClip();
     DrawRecord*     recordDraw(const DrawInfo&);
     StencilPath*    recordStencilPath();
     DrawPath*       recordDrawPath();
+    DrawPaths*      recordDrawPaths();
     Clear*          recordClear();
     CopySurface*    recordCopySurface();
 
     // TODO: Use a single allocator for commands and records
     enum {
         kCmdPreallocCnt          = 32,
         kDrawPreallocCnt         = 8,
         kStencilPathPreallocCnt  = 8,
         kDrawPathPreallocCnt     = 8,
+        kDrawPathsPreallocCnt    = 8,
         kStatePreallocCnt        = 8,
         kClipPreallocCnt         = 8,
         kClearPreallocCnt        = 4,
         kGeoPoolStatePreAllocCnt = 4,
         kCopySurfacePreallocCnt  = 4,
     };
 
     SkSTArray<kCmdPreallocCnt, uint8_t, true>                          fCmds;
     GrSTAllocator<kDrawPreallocCnt, DrawRecord>                        fDraws;
-    GrSTAllocator<kStatePreallocCnt, StencilPath>                      fStencilPaths;
-    GrSTAllocator<kStatePreallocCnt, DrawPath>                         fDrawPaths;
+    GrSTAllocator<kStencilPathPreallocCnt, StencilPath>                fStencilPaths;
+    GrSTAllocator<kDrawPathPreallocCnt, DrawPath>                      fDrawPath;
+    GrSTAllocator<kDrawPathsPreallocCnt, DrawPaths>                    fDrawPaths;
     GrSTAllocator<kStatePreallocCnt, GrDrawState::DeferredState>       fStates;
     GrSTAllocator<kClearPreallocCnt, Clear>                            fClears;
     GrSTAllocator<kCopySurfacePreallocCnt, CopySurface>                fCopySurfaces;
     GrSTAllocator<kClipPreallocCnt, SkClipStack>                       fClips;
     GrSTAllocator<kClipPreallocCnt, SkIPoint>                          fClipOrigins;
 
     GrDrawTarget*                   fDstGpu;
 
     bool                            fClipSet;
 
@@ skipping 24 matching lines @@
 
     virtual bool       isIssued(uint32_t drawID) { return drawID != fDrawID; }
 
     bool                            fFlushing;
     uint32_t                        fDrawID;
 
     typedef GrDrawTarget INHERITED;
 };
 
 #endif